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Triangle QRS is both isosceles and right-angled.The letter P in the diagram is reflected in the line QR.
The image of this first reflection is then reflected in the line QS.
The image of this second reflection is then reflected in the line RS.
Draw a diagram showing triangle QRS and the image of P after all three reflections.
This problem is taken from the UKMT Mathematical Challenges.
You can find more short problems, arranged by curriculum topic, in our short problems collection.